This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU80X850, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAU replacement uses the same profile body, bore, stroke, force and SC-series mounting. It moves to the current CMSG / DMSG / EMSG sensor switches (the SU used CS1-B / DS1-B) and adds the SAUF valve-integrated option.

The AirTAC Airtac SU63-100 Standard Cylinder SU80X850 is a double-acting profile-type standard cylinder with a Ø80mm bore and 850mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU80X850, which matches its bore, stroke, force and mounting.
The AirTAC SU80X850 is a discontinued double-acting profile-type cylinder with an 80mm bore and 850mm stroke. It delivers 2513N push and 2268N pull at 0.5MPa, using a 3/8" port and M20x1.5 rod thread. AirTAC replaced this legacy unit with the SAU80X850, a direct upgrade retaining the exact bore, stroke, force, port size, and SC-series mounting.
This compact extruded-aluminium body is shorter than an ISO 15552 equivalent. The SAU upgrade switches to current CMSG/DMSG/EMSG sensors and adds a SAUF built-in-valve option the SU lacked. Note this SKU has no magnet and cannot accept a switch.
| Model | Airtac SU63-100 Standard Cylinder SU80X850 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU80X850 |
| Bore size | Ø80 mm |
| Stroke | 850 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 28 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU80X850 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAU80X850 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×850 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SU-family variants: SUD (double rod), SUJ (adjustable stroke) — each maps to its SAU equivalent (SUD→SAUD, SUJ→SAUJ). The current SAU line adds the SAUF valve-integrated option.
Pushes heavy pallets sideways on a packaging line using the 2513N thrust at 0.5MPa, with the 850mm stroke clearing wide conveyor lanes.
Ejects molded parts from a press over an 850mm distance, relying on the 28mm adjustable air cushions to decelerate the 25mm rod at stroke end.
To replace the SU80X850, order the SAU80X850 direct equivalent, confirming the 3/8" port, M20x1.5 thread, and SC-series mounts (LB/FA/FB/CA/CB). Because this 850mm stroke exceeds 300mm, use external guides to prevent rod bending and side-load damage. If sizing neighbours, a 63mm bore yields 1559N push at 0.5MPa, while a 100mm bore yields 3927N. This non-magnetic SKU cannot take a sensor; if you previously used -S switches, the SAU requires CMSG/DMSG/EMSG sensors. For load holding on air loss, add an external rod lock or pilot-operated check valve, as cushions only decelerate. If self-switching is needed, explore the SAUF valve-integrated variant.
Replacement checklist
Yes, the SU80X850 is discontinued. The direct replacement is the AirTAC SAU80X850. It shares the identical 80mm bore, 850mm stroke, 3/8" port, output force, and SC-series mounting accessories, so it fits the same application directly.
The 80mm bore provides 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, and a theoretical max of 513kgf at 1.0MPa. This specific SKU lacks a magnet and cannot accept a sensor. If sensing is needed on the SAU replacement, it uses CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU80X850 replacement — usually within 7-8 hours.